d711547ab5
KDE Connect runs, and the bluetooth service gets published in the SDP (service discovery protocol), which other devices use to determine what services are available. The getPairedDevices() method in the link provider class uses D-Bus to get the list of paired devices, since Qt doesn't have a method giving that information. As a result, that part of the code only works on Linux. REVIEW: 122174
367 lines
13 KiB
C++
367 lines
13 KiB
C++
/**
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* Copyright 2015 Saikrishna Arcot <saiarcot895@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License or (at your option) version 3 or any later version
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* accepted by the membership of KDE e.V. (or its successor approved
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* by the membership of KDE e.V.), which shall act as a proxy
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* defined in Section 14 of version 3 of the license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "bluetoothlinkprovider.h"
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#include "core_debug.h"
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#include <KSharedConfig>
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#include <KConfigGroup>
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#include <QDBusArgument>
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#include <QDBusConnection>
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#include <QDBusInterface>
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#include <QDBusReply>
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#include "bluetoothdevicelink.h"
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BluetoothLinkProvider::BluetoothLinkProvider()
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{
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if (!mDevice.isValid()) {
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qCWarning(KDECONNECT_CORE) << "No local device found";
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mBluetoothServer = NULL;
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return;
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}
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mBluetoothServer = new QBluetoothServer(QBluetoothServiceInfo::RfcommProtocol, this);
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mBluetoothServer->setSecurityFlags(QBluetooth::Encryption | QBluetooth::Secure);
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connect(mBluetoothServer, SIGNAL(newConnection()), this, SLOT(serverNewConnection()));
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mServiceUuid = QBluetoothUuid(QString("576bf9a0-98c9-11e4-bc89-0002a5d5c51b"));
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connectTimer = new QTimer(this);
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connectTimer->setInterval(30000);
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connectTimer->setSingleShot(false);
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#if QT_VERSION < QT_VERSION_CHECK(5, 4, 0)
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connect(connectTimer, SIGNAL(timeout()), this, SLOT(connectToPairedDevices()));
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#else
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mServiceDiscoveryAgent = new QBluetoothServiceDiscoveryAgent(this);
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mServiceDiscoveryAgent->setUuidFilter(mServiceUuid);
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connect(mServiceDiscoveryAgent, SIGNAL(finished()), this, SLOT(serviceDiscoveryFinished()));
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connect(connectTimer, SIGNAL(timeout()), mServiceDiscoveryAgent, SLOT(start()));
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#endif
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}
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void BluetoothLinkProvider::onStart()
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{
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if (!mBluetoothServer) {
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return;
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}
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#if QT_VERSION < QT_VERSION_CHECK(5, 4, 0)
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connectToPairedDevices();
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#else
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mServiceDiscoveryAgent->start();
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#endif
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connectTimer->start();
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mKdeconnectService = mBluetoothServer->listen(mServiceUuid, "KDE Connect");
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onNetworkChange(QNetworkSession::Connected);
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}
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void BluetoothLinkProvider::onStop()
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{
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if (!mBluetoothServer) {
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return;
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}
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connectTimer->stop();
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mKdeconnectService.unregisterService();
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mBluetoothServer->close();
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}
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//I'm in a new network, let's be polite and introduce myself
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void BluetoothLinkProvider::onNetworkChange(QNetworkSession::State state)
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{
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Q_UNUSED(state);
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}
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QList<QBluetoothAddress> BluetoothLinkProvider::getPairedDevices() {
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QDBusConnection bus = QDBusConnection::systemBus();
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QDBusInterface manager_iface("org.bluez", "/","org.bluez.Manager", bus);
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QDBusReply<QDBusObjectPath> devices = manager_iface.call("DefaultAdapter");
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if (!devices.isValid()) {
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qCWarning(KDECONNECT_CORE) << "Couldn't get default adapter:" << devices.error();
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return QList<QBluetoothAddress>();
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}
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QDBusObjectPath defaultAdapter = devices.value();
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QString defaultAdapterPath = defaultAdapter.path();
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QDBusInterface devices_iface("org.bluez", defaultAdapterPath, "org.bluez.Adapter", bus);
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QDBusMessage pairedDevices = devices_iface.call("ListDevices");
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QDBusArgument pairedDevicesArg = pairedDevices.arguments().at(0).value<QDBusArgument>();
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pairedDevicesArg.beginArray();
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QList<QBluetoothAddress> pairedDevicesList;
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while (!pairedDevicesArg.atEnd()) {
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QVariant variant = pairedDevicesArg.asVariant();
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QDBusObjectPath pairedDevice = qvariant_cast<QDBusObjectPath>(variant);
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QString pairedDevicePath = pairedDevice.path();
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QString pairedDeviceMac = pairedDevicePath.split(QChar('/')).last().remove("dev_").replace("_", ":");
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pairedDevicesList.append(QBluetoothAddress(pairedDeviceMac));
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}
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return pairedDevicesList;
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}
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void BluetoothLinkProvider::connectToPairedDevices() {
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QList<QBluetoothAddress> pairedDevices = getPairedDevices();
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for (int i = 0; i < pairedDevices.size(); i++) {
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QBluetoothAddress pairedDevice = pairedDevices.at(i);
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if (mSockets.contains(pairedDevice)) {
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continue;
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}
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QBluetoothSocket* socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol, this);
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connect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
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connect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/onStart: Connecting to " << pairedDevice.toString();
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socket->connectToService(pairedDevice, mServiceUuid);
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}
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}
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void BluetoothLinkProvider::connectError()
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{
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QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
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if (!socket) return;
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qCWarning(KDECONNECT_CORE) << "connectError: Couldn't connect to socket:" << socket->errorString();
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disconnect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
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disconnect(socket, SIGNAL(readyRead()), this, SLOT(serverDataReceived()));
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disconnect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
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mSockets.remove(socket->peerAddress());
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socket->deleteLater();
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}
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void BluetoothLinkProvider::addLink(BluetoothDeviceLink* deviceLink, const QString& deviceId)
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{
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QMap< QString, DeviceLink* >::iterator oldLinkIterator = mLinks.find(deviceId);
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if (oldLinkIterator != mLinks.end()) {
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DeviceLink* oldLink = oldLinkIterator.value();
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disconnect(oldLink, SIGNAL(destroyed(QObject*)),
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this, SLOT(deviceLinkDestroyed(QObject*)));
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oldLink->deleteLater();
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mLinks.erase(oldLinkIterator);
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}
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mLinks[deviceId] = deviceLink;
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}
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//I'm the new device and I found an existing device
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void BluetoothLinkProvider::serviceDiscoveryFinished()
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{
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QList<QBluetoothServiceInfo> services = mServiceDiscoveryAgent->discoveredServices();
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foreach (QBluetoothServiceInfo info, services) {
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if (mSockets.contains(info.device().address())) {
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continue;
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}
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QBluetoothSocket* socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
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connect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
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connect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
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socket->connectToService(info);
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serviceDiscoveryFinished: Connecting to " << socket->peerAddress().toString();
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if (socket->error() != QBluetoothSocket::NoSocketError) {
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qCWarning(KDECONNECT_CORE) << "BluetoothLinkProvider/serviceDiscoveryFinished: Socket connection error: " << socket->errorString();
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}
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}
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}
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//I'm the new device and I'm connected to the existing device. Time to get data.
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void BluetoothLinkProvider::clientConnected()
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{
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QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
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if (!socket) return;
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/clientConnected: Connected to " << socket->peerAddress().toString();
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if (mSockets.contains(socket->peerAddress())) {
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/clientConnected: Duplicate connection to " << socket->peerAddress().toString();
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socket->close();
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socket->deleteLater();
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return;
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}
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mSockets.insert(socket->peerAddress(), socket);
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disconnect(socket, SIGNAL(connected()), this, SLOT(clientConnected()));
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connect(socket, SIGNAL(readyRead()), this, SLOT(clientIdentityReceived()));
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connect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
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}
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//I'm the new device and the existing device sent me data.
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void BluetoothLinkProvider::clientIdentityReceived()
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{
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QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
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if (!socket) return;
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QByteArray identityArray;
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while (socket->bytesAvailable() > 0 || !identityArray.contains('\n')) {
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identityArray += socket->readAll();
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}
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disconnect(socket, SIGNAL(readyRead()), this, SLOT(clientIdentityReceived()));
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NetworkPackage receivedPackage("");
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bool success = NetworkPackage::unserialize(identityArray, &receivedPackage);
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if (!success || receivedPackage.type() != PACKAGE_TYPE_IDENTITY) {
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qCDebug(KDECONNECT_CORE) << "BluetoothLinkProvider/clientIdentityReceived: Not an identification package (wuh?)";
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mSockets.remove(socket->peerAddress());
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socket->close();
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socket->deleteLater();
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return;
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}
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/clientIdentityReceived: Received identity package from " << socket->peerAddress().toString();
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disconnect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
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const QString& deviceId = receivedPackage.get<QString>("deviceId");
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BluetoothDeviceLink* deviceLink = new BluetoothDeviceLink(deviceId, this, socket);
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NetworkPackage np2("");
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NetworkPackage::createIdentityPackage(&np2);
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success = deviceLink->sendPackage(np2);
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if (success) {
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qCDebug(KDECONNECT_CORE) << "Handshaking done (I'm the new device)";
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connect(deviceLink, SIGNAL(destroyed(QObject*)),
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this, SLOT(deviceLinkDestroyed(QObject*)));
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Q_EMIT onConnectionReceived(receivedPackage, deviceLink);
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//We kill any possible link from this same device
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addLink(deviceLink, deviceId);
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} else {
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// Connection might be lost. Delete it.
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delete deviceLink;
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}
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//We don't delete the socket because now it's owned by the BluetoothDeviceLink
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}
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//I'm the existing device, a new device is kindly introducing itself.
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void BluetoothLinkProvider::serverNewConnection()
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{
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QBluetoothSocket* socket = mBluetoothServer->nextPendingConnection();
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverNewConnection:" << "Received connection from " << socket->peerAddress().toString();
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if (mSockets.contains(socket->peerAddress())) {
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverNewConnection: Duplicate connection from " << socket->peerAddress().toString();
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socket->close();
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socket->deleteLater();
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return;
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}
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connect(socket, SIGNAL(readyRead()), this, SLOT(serverDataReceived()));
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connect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
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connect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
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NetworkPackage np2("");
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NetworkPackage::createIdentityPackage(&np2);
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socket->write(np2.serialize());
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverNewConnection: Sent identity package to " << socket->peerAddress().toString();
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mSockets.insert(socket->peerAddress(), socket);
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}
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//I'm the existing device and this is the answer to my identity package (data received)
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void BluetoothLinkProvider::serverDataReceived()
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{
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QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
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if (!socket) return;
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QByteArray identityArray;
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while (socket->bytesAvailable() > 0 || !identityArray.contains('\n')) {
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identityArray += socket->readAll();
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}
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disconnect(socket, SIGNAL(readyRead()), this, SLOT(serverDataReceived()));
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disconnect(socket, SIGNAL(error(QBluetoothSocket::SocketError)), this, SLOT(connectError()));
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NetworkPackage receivedPackage("");
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bool success = NetworkPackage::unserialize(identityArray, &receivedPackage);
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if (!success || receivedPackage.type() != PACKAGE_TYPE_IDENTITY) {
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qCDebug(KDECONNECT_CORE) << "BluetoothLinkProvider/serverDataReceived: Not an identity package.";
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mSockets.remove(socket->peerAddress());
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socket->close();
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socket->deleteLater();
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return;
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}
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qCDebug(KDECONNECT_CORE()) << "BluetoothLinkProvider/serverDataReceived: Received identity package from " << socket->peerAddress().toString();
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const QString& deviceId = receivedPackage.get<QString>("deviceId");
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BluetoothDeviceLink* deviceLink = new BluetoothDeviceLink(deviceId, this, socket);
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connect(deviceLink, SIGNAL(destroyed(QObject*)),
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this, SLOT(deviceLinkDestroyed(QObject*)));
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Q_EMIT onConnectionReceived(receivedPackage, deviceLink);
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addLink(deviceLink, deviceId);
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}
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void BluetoothLinkProvider::deviceLinkDestroyed(QObject* destroyedDeviceLink)
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{
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//kDebug(debugArea()) << "deviceLinkDestroyed";
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const QString id = destroyedDeviceLink->property("deviceId").toString();
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qCDebug(KDECONNECT_CORE()) << "Device disconnected:" << id;
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QMap< QString, DeviceLink* >::iterator oldLinkIterator = mLinks.find(id);
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if (oldLinkIterator != mLinks.end() && oldLinkIterator.value() == destroyedDeviceLink) {
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mLinks.erase(oldLinkIterator);
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}
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}
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void BluetoothLinkProvider::socketDisconnected()
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{
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QBluetoothSocket* socket = qobject_cast<QBluetoothSocket*>(sender());
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if (!socket) return;
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disconnect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
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mSockets.remove(mSockets.key(socket));
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}
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BluetoothLinkProvider::~BluetoothLinkProvider()
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{
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}
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